Invoicing guides

Short and practical — everything you actually need to know to bill clients confidently, and nothing you don't.

• How to make an invoice (what to include, step by step)

  The nine things every invoice needs, common mistakes, and a checklist you can follow in under a minute.

• Invoice vs. receipt vs. estimate: which document when?

  Three documents, three moments in a job. A plain-English guide to using the right one at the right time.

• Net 30, Net 15, due on receipt: payment terms explained

  What the jargon means, which terms to choose, and small wording changes that get you paid faster.

• Invoice numbering: simple systems that scale

  Why numbers matter, three numbering schemes that work, and the mistakes that cause bookkeeping headaches.